<picker fields=“month” mode=“date” value="{{date}}" start=“2000-09-01” end=“2017-09-01” bindchange=“bindDateChange”>
                <view class=“picker”>
                {{date}}
                </view>
            </picker>

<picker mode=“date” value="{{date}}" start=“2000-09-01” end=“2017-09-01” bindchange=“bindDateChange”>
                <view class=“picker”>
                {{date}}
                </view>
            </picker>

上面的两部分代码，一个加了fields=“month” 一个没有加。点击顺序不同  注意展示的选择器的粒度